Disposition de couplage pour installations télégraphiques avec trafic en directionalternante, notamment avec service à auto-connexion,申请号FRD712808-传众专利搜索

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发明名称	Disposition de couplage pour installations télégraphiques avec trafic en directionalternante, notamment avec service à auto-connexion
摘要
申请公布号	FR712808(A)	申请公布日期	1931.10.13
申请号	FRD712808	申请日期	1931.01.23
申请人	SIEMENS & HALSKE AKTIENGESELLSCHAFT	发明人
分类号	H04L12/00	主分类号	H04L12/00
代理机构		代理人
主权项
地址

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